Submitted for Publication: February 8, 2014; final revision received April 22, 2014; accepted May 21, 2014.
Published Online: September 4, 2014. doi:10.1001/jamaophthalmol.2014.3291.
Study concept and design: Gandolfi, Carta.
Acquisition, analysis, or interpretation of data: Gandolfi, Ungaro, Tardini, Ghirardini, Mora.
Drafting of the manuscript: Gandolfi, Tardini, Ghirardini, Carta, Mora.
Critical revision of the manuscript for important intellectual content: Gandolfi, Ungaro.
Statistical analysis: Ghirardini, Carta, Mora.
Obtained funding: Gandolfi.
Administrative, technical, or material support: Ungaro, Tardini.
Study supervision: Gandolfi, Ungaro, Mora.
Conflict of Interest Disclosures: All authors have completed and submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest and none were reported.